Frequency domain self-tuning for vibration control

Synergetic interaction of identification and control has been investigated for a frequency domain approach to adaptive semi-active suspension scheme for vehicle vibration control. It is proved that the loop of identification and control can be closed while the adaptive scheme remains stable for time varying plant dynamics. The control scheme presented is a special type of dual controller-an online worst-case weakly-dual scheme. The paper outlines the hardware of the system including the adaptive semi-active vibration controller, and describes the adaptive control scheme and a result on stability.